30665042512 has 20 divisors (see below), whose sum is σ = 63983791060. Its totient is φ = 14153096448.

The previous prime is 30665042501. The next prime is 30665042519. The reversal of 30665042512 is 21524056603.

It can be written as a sum of positive squares in 2 ways, for example, as 2994716176 + 27670326336 = 54724^2 + 166344^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30665042519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73713837 + ... + 73714252.

It is an arithmetic number, because the mean of its divisors is an integer number (3199189553).

Almost surely, 2^30665042512 is an apocalyptic number.

It is an amenable number.

30665042512 is an abundant number, since it is smaller than the sum of its proper divisors (33318748548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30665042512 is a wasteful number, since it uses less digits than its factorization.

30665042512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147428110 (or 147428104 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 30665042512 in words is "thirty billion, six hundred sixty-five million, forty-two thousand, five hundred twelve".